Sources and licences

Data sources

Our forecasts are built from open data published by weather services, grid operators, public authorities and power exchanges. This page lists who provides it, what we use it for and on which terms.

Licences checked on 20 October 2026.

Weather

MET Norway

Used for: Weather forecasts for most markets
Licence: NLOD 2.0 / CC BY 4.0
Credit: Based on data from MET Norway

Deutscher Wetterdienst (via Bright Sky)

Used for: Weather data for Germany
Licence: CC BY 4.0
Credit: Quelle: Deutscher Wetterdienst

GeoSphere Austria

Used for: Weather forecast for Austria
Licence: CC BY 4.0
Credit: Datenquelle: GeoSphere Austria

Český hydrometeorologický ústav (ČHMÚ)

Used for: Weather forecast for Czechia (ALADIN model)
Licence: CC BY 4.0
Credit: Český hydrometeorologický ústav

Meteostat

Used for: Measured weather history
Licence: CC BY 4.0
Credit: Meteostat and its data providers

Electricity market and grid

ENTSO-E Transparency Platform

Used for: Electricity load, generation and plant availability
Licence: CC BY 4.0
Credit: ENTSO-E Transparency Platform

SMARD (Bundesnetzagentur)

Used for: Wholesale prices and generation for Germany and neighbouring countries
Licence: CC BY 4.0
Credit: Bundesnetzagentur | SMARD.de

OMIE

Used for: Day-ahead prices for Spain and Portugal
Licence: OMIE terms of use (unaltered, with source)
Credit: OMIE

Fingrid

Used for: Wind, solar and load forecasts for Finland
Licence: CC BY 4.0
Credit: Source Fingrid / data.fingrid.fi, license CC 4.0 BY

NUCS (Nordic Unavailability Collection System)

Used for: Plant and grid unavailability in the Nordic countries
Licence: NUCS terms of use
Credit: NUCS Platform

Norges vassdrags- og energidirektorat (NVE)

Used for: Norwegian hydro reservoir levels
Licence: NLOD
Credit: NVE

Hub'Eau

Used for: River levels and flows in France
Licence: Licence Ouverte 2.0
Credit: Hub'Eau (OFB, BRGM)

Fuels and exchange rates

World Bank

Used for: Coal price
Licence: CC BY 4.0
Credit: World Bank Commodity Price Data (The Pink Sheet)

U.S. Energy Information Administration (via datahub.io)

Used for: Oil and natural gas prices
Licence: Public domain (US federal agency)
Credit: U.S. Energy Information Administration

European Central Bank

Used for: Exchange rates for prices in other currencies
Licence: ECB terms of use
Credit: Source: ECB

Installed capacity and levies

OpenStreetMap

Marktstammdatenregister (Bundesnetzagentur)

Used for: Solar installations in Germany
Licence: DL-DE-BY-2.0
Credit: Bundesnetzagentur, Marktstammdatenregister

Regjeringen.no / NVE

Used for: Norwegian tax and levy rates
Licence: Official publication
Credit: Regjeringen.no, NVE

Notes

We process this data further: our models turn weather, market and installation data into price and CO2 forecasts. The values in the app, the API and the integrations are therefore our own calculations, not the providers' original data.

Listing a provider does not mean that it supports or recommends us, or that it has reviewed our forecasts.

How the CO2 values are calculated is described in the CO2 methodology.